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Preparative Electrosynthesis of Strong Oxidizers at Boron-Doped Diamond Electrode in Anhydrous HF |
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| Authors: | Dr Piotr Po?czyński Dr Rafa? Jurczakowski Dr Adam Grzelak Dr Evgeny Goreshnik Dr Zoran Mazej Prof Wojciech Grochala |
| Institution: | 1. Faculty of Chemistry, University of Warsaw, Pasteur 1, 02093 Warsaw, Poland;2. Center of New Technologies, University of Warsaw, Zwirki i Wigury 93, 02089 Warsaw, Poland;3. Department of Inorganic Chemistry and Technology, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia |
| Abstract: | The use of the boron-doped diamond electrode as a sufficiently stable electrode for electrochemical measurements/synthesis in liquid anhydrous hydrogen fluoride medium is reported. Electrooxidation of silver(I) has been studied in this solvent by using classical transient electrochemical methods and impedance spectroscopy. It has been found that faradaic currents related to silver(I) oxidation and the fluorine evolution reaction are reasonably separated at the potential scale, which allows efficient electrosynthesis of AgIIF2, a powerful oxidizer. Impedance spectroscopy measurements provide insight into complex mechanism of AgF2 formation. The procedure for electrosynthesis is provided for the first time in both galvanostatic and potentiostatic condition. |
| Keywords: | boron electrochemical impedance spectroscopy hydrogen fluorides oxidizers silver |